Dharani S, Mulmudi HK, Yantara N, Thu Trang PT, Park NG, Graetzel M, Mhaisalkar S, Mathews N, Boix PP. High efficiency electrospun TiO₂ nanofiber based hybrid organic-inorganic perovskite solar cell.
Nanoscale 2014;
6:1675-9. [PMID:
24336873 DOI:
10.1039/c3nr04857h]
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Abstract
The good electrical and morphological characteristics of TiO₂ nanofibers and the high extinction coefficient of CH₃NH₃PbI₃ perovskite are combined to obtain a solar cell with a power conversion efficiency of 9.8%. The increase of the film thickness dramatically diminishes the performance due to the reduction in porosity of the TiO₂ nanofiber framework. The optimum device (∼413 nm film thickness) is compared to a planar device, where the latter produces higher V(oc) but lower J(sc), and consequently lower efficiency at all measured light intensities.
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